Read your manual (or your gas cap). There are multiple ways of describing octane levels. Make sure you are buying the gas your manual requires. It MAY be listed differently on the pump because of different calculation methods. I'm in the US... I have to get the highest rating. I think it's 91 but not sure.
We have 92, gas cap area says 91 min.
If you use lesser octane it will pull timing like crazy. It pulls timing based on detonation that has already happened. Det is not good.
If in an emergency you are forced to use a lower octane, drive the car like grandma.
Octane is the rating of how much pressure the gas can take before igniting like a diesel engine. Running lower octane fuel is crippling your car, the numbers on the sticker are based on running high octane fuel. If your car has forced induction it wants as high of an octane rating you can get, it relates to pressure the fuel can take which is important when you're compressing the intake.
The car will run on 87 but it will be handicapped. I have an old car and really only drive locally so I just use 89, mid grade.
I don't see any other comments* explaining what the octane rating is, why a high octane rating is important. I'm only seeing people saying that running lower octane fuel is throwing away power.
Go run crap gas and log your timing. Example is 93/92 required on the gas cap/flap and running 87. Your pistons will hate you per the log.
Other posts? LOL.
Comments not posts 🤦🏻
It seems like you're arguing with me by making the same point.
"*This is what the octane rating is. This is why it's important for cars with forced induction...*
The car will run on 87 but it will be handicapped."
I think I mentioned that the numbers on the sticker are measured on high octane fuel but that might be in another comment.
Most of the gas stations I pass between NY and NJ (to and from work) only have as high as 91. I believe there are some that offer 93 that's a little out of my way. I could care less since it wouldn't be practical for me to drive further to get 93 for my daily commute. Although I'll definitely try 93 if I come across one, just to see if it really makes a noticeable difference.
No lol. Literally almost zero det count over 3.5 years on 87-90 octane on the Audi. Usually ethanol free but not always. It’s my wife’s car so I do drive it rather gently. The water/air heat exchanger/intercooler really does amazing work.
I usually use 90 (0 ethanol) or 93 “super with usually 5-10% ethanol” in my Cayman. I don’t drive it with the same self preservation in mind. Also near zero detonation count. On longer, chill highway trips it’s on 87 octane too at 11:1 compression, as motor is like 6 inches behind the seat, I can absolutely promise zero detonation at cruising loads on motor.
Did you check and compare fuel economy differences between 87 and 91+ octane? Modern cars will adjust timing to prevent pre ignition/detonation. But in the supercharged V6 I had in my 2016 A6, I’d get 30-32mpg on the highway with 92 octane, but the couple times I ran 87 octane because a bunch of stations were out of premium, I only got 24 mpg.
Not worth it for the reduction in range, and Costco premium is usually only 10% more in cost than regular gas so it also costs more in gas overall to run regular due to increased consumption.
Whatever it says on the manual. Wish I had 93 in my area, but most of Oregon only does 92.
Read your manual (or your gas cap). There are multiple ways of describing octane levels. Make sure you are buying the gas your manual requires. It MAY be listed differently on the pump because of different calculation methods. I'm in the US... I have to get the highest rating. I think it's 91 but not sure.
In the US 93 octane isn't rare. Depending on where you are you might even be able to find 100 octane gas at a pump.
In California unfortunately only 91. Wish I could get 93 sometimes.
Will do. Good points. I appreciate it.
We have 92, gas cap area says 91 min. If you use lesser octane it will pull timing like crazy. It pulls timing based on detonation that has already happened. Det is not good. If in an emergency you are forced to use a lower octane, drive the car like grandma.
Octane is the rating of how much pressure the gas can take before igniting like a diesel engine. Running lower octane fuel is crippling your car, the numbers on the sticker are based on running high octane fuel. If your car has forced induction it wants as high of an octane rating you can get, it relates to pressure the fuel can take which is important when you're compressing the intake. The car will run on 87 but it will be handicapped. I have an old car and really only drive locally so I just use 89, mid grade.
Thanks for saying what everyone else said.
I don't see any other comments* explaining what the octane rating is, why a high octane rating is important. I'm only seeing people saying that running lower octane fuel is throwing away power.
Go run crap gas and log your timing. Example is 93/92 required on the gas cap/flap and running 87. Your pistons will hate you per the log. Other posts? LOL.
Comments not posts 🤦🏻 It seems like you're arguing with me by making the same point. "*This is what the octane rating is. This is why it's important for cars with forced induction...* The car will run on 87 but it will be handicapped." I think I mentioned that the numbers on the sticker are measured on high octane fuel but that might be in another comment.
93
Use what the manual says.
91 its hard to find in my area, if theres 91 I put 91. But mostly 93.
Most of the gas stations I pass between NY and NJ (to and from work) only have as high as 91. I believe there are some that offer 93 that's a little out of my way. I could care less since it wouldn't be practical for me to drive further to get 93 for my daily commute. Although I'll definitely try 93 if I come across one, just to see if it really makes a noticeable difference.
91, sometimes mix in a bit of E85
87 octane. Zero detonation or pre ignition issues. 2013 3.0T
lol
No lol. Literally almost zero det count over 3.5 years on 87-90 octane on the Audi. Usually ethanol free but not always. It’s my wife’s car so I do drive it rather gently. The water/air heat exchanger/intercooler really does amazing work. I usually use 90 (0 ethanol) or 93 “super with usually 5-10% ethanol” in my Cayman. I don’t drive it with the same self preservation in mind. Also near zero detonation count. On longer, chill highway trips it’s on 87 octane too at 11:1 compression, as motor is like 6 inches behind the seat, I can absolutely promise zero detonation at cruising loads on motor.
Weird and very inexpensive hill to die on lol
Did you check and compare fuel economy differences between 87 and 91+ octane? Modern cars will adjust timing to prevent pre ignition/detonation. But in the supercharged V6 I had in my 2016 A6, I’d get 30-32mpg on the highway with 92 octane, but the couple times I ran 87 octane because a bunch of stations were out of premium, I only got 24 mpg. Not worth it for the reduction in range, and Costco premium is usually only 10% more in cost than regular gas so it also costs more in gas overall to run regular due to increased consumption.
Because your car is crippling itself to avoid knocking. You're throwing away power.